Device for clamping timbers together



T. C. SCHENK.

DEVICE FOR CLAMPING TIMBERS TOGETHER APPLICATION FILED MAR. 30, 1922.

Patented Oct. 19, QZL

Patented 0st. l0, 1922.

einen Ttig? TAMIS C. SCHENK, OF DETROIT, MICHGAN.

DEVICE son CLAMPING :mamas TOGETHER.

Application led March 30, 1922. Serial No. 548,246.

To all whom t may calimera: I

Beit known that I, TAMIs CORNELIS SGHENK, al subject of the Queen of the Netherlands, aA resident of Detroit, in the county of Wayne and State of Michigan, have invented a certain new and useful Imrovement in Devices for Clamping Timgers Together, of which the following is a specification.

My invention relates particularly to a device by means of which timbers, poles, etc., may be clamped together. y

The object of my invention is to provide a device of this character by means of which timbers used in various kinds of construction work may be secured 'together so as to obviate the expense incident to cutting the timbers and the securing of the same toy gether with spikes, nails, screws, etc. In

construction Work it was formerly necessary, especially in the erection of scaffolding for buildings, to .provide'uprights connected together at their ends by rst sawing the timbers the correct length and then fastening them together with the aid of spikes, nails or screws. In the utilization of my invention it is not necessary to change the length of the timbers, nor is it necessary to damage them by the use of spikes, nails, screws, etc., but timbers of any length can be used repeatedly in the construction of buildings of different proportions 4without the unnecessary labor and cost of materials found necessary previously. Still another object isto provide a type clamping device such that the cost of manufacture may be reduced to a minimum.

Fu ther objects of my invention will be seen from the detailed hereinafter.

`While my invention is capable of being carried out in many different Ways, for the purpose of illustration I have shown only one way of carrying out the same in the accompanying drawings in Which- Figure l is a side elevation showing two timbers secured together with my clamping device;

Fig. 2 is a plan view of the same showing the timbers in .cross-section;

b Fig. 3 is a plan view of a U-shaped mem- Fig. is a side elevation piece used therewith and Fig. 5 is a plan view of a Spanner used with my'inventon.

of the locking description thereof v as to serve as a fulcrum for a locking piece 6. The locking piece V6 is formed from a Hat sheet of iron, in oneside of which there is aV Wedge-shaped depression 7 to for lateral extension 8, the free edge ci" whi i arranged to grip against the side of the adjacent timber 2. two lateral edges 9 at the two sides of the extension 8 serve to rest againstthe straight legs 3 ci the U-shaped member and thus to limit the turning movement. locking piece is. accomplished by the use ot a Spanner 10 having a slot il which its overfthe outer edge of the locking niece 5 and is provided with a handle E to 'mate the same in the manner hercinatcr scribed.

In applying my invention, the and 2 hai/'ing been overlaiiped sein( givethe desired total length to the comi' timbers, each of the U-shaped members 1s placed around the timbers with the hooks i directed downwardly.v The locking piece ii is now inserted with the strai'gjH t er thel hooks 5 and the free edge ci tl' i sion 8 located aga-inst the timber o. with the point where the other e the U-shaped member contacte: *f jacent timber. The spanner l0 .s now serted over the locking' piece and. is rotated so as to move the inthe latter ends ci the ifg shaped member carrying the hooks 5 down-- Wardly until the `lateral portions 9 locking legs a.

of the lece 6 rests against the straight bis movement will firmly the timbers l and 2 together and any tendl ency of the upper timber 2 to move downh wardly, underl any excessive load, can only result in tightening the clamping action ci; the clamping device as it would tend to increase the distance between the locking piece and the opposite end ci? the @shaped member 3. vThe clamping action er the de vice is so effective, however, that norme?. loads will not in any wat affect the relative positions of the timbers i and 9..

hilo I have described my invention above in detail, manv changes may be man'n The movement of the 1 within the scope of Inj; invention and appended claims.

I claim:

A. clamping derice comprising a U- shaped member having hooks on its outer ends and a locking piece carried in said hooksT said locking' piece having an extension at one side .,o provide a clamping edge, and lateral port-ions arranged to contact with the U-shaped member to limit the turning movement of the locking piece.

2. A clamping device eomprieing a U- shaped member having hooks on its outer ends and a sheet metal lockingT niece -arried in said hooks, said locking` piece having"y an upset extension at one side to provide a elan'nliing edge, and lateral portions arranged to Contact with the U-shaped member to limit the turning niovement of the locking piece.

3. Clamping; device compris" a U- Shaped mem'oer provided with s ight legs having hooks on their outer ends and a locking piece carried in said hooks, said locking piece having an extension at one eide to provide a clampingedge: and lateral portions arranged to contact with the `U- shaped member to limit the turning movement of the locking piece.

4;. A clamping device comprisinir;` a U- shaped niernher provided with straight having hooks on theil outer ende` and a sheet metal looking; piece carried in :said imola?j said looking piece having an upset extensijn at one side to provide a clamping edge,

and lateral portion@ arranged to contact with the lei-Shaped member to'limit the tarning movement of therlocline piece.

'5. A clamping device comprising a, U- shaped member having' hooke` on its outer ends and a locking piece carried in said hooks, said looking pleee having an eatension at one sideto provide a elalnpi'ng edgei lateral portionis arranged to contact withv the U-Shaped member to limit the turning movement vof the looking iiieoe, and 2.- de. tachaole Spanner provided for turning:r the locking piece.

6. A clamping device comprising a U- shaped member having hooks on ite outer ends and a sheet metai locking piece carried in said hooksaid locking piece having an apset extension at one side topi-Ovide a clampin r edge, lateral portions arranged to eontae with the til-Shaped meinoer to limit the torndet'achable Spanner provided for turning the locking piece.

ing; movement of the 'loe ring' pie-ce1, `and 7. f clamping: device comprising U' shaped member provided with straight legs havin;1r hooks on their outer'ends/ and a locking piece carried in. said hooks, said locl ing: piece havingan extension at one side to provide .a clamping edge, lateral portions arranged to contaet with the U-sha-ped niemher to limit the turning moveioei'rt of the locking piece, and a detachable Spanner provided 'for turningfthe locking piece.

8. A clamping device comprising a U-A sha'ned member .provideddvith straight legev having hooks on their outer endsandva sheet metal locking .piece carried in said hooksl1 said locking piece having an upset extension at one Side to provide a clamping edge7 lateral portions ar 'anged eontaet n n the Lil-shaped member to limit the turning movement of the locking piece, and a detach.- able Spanner provided i'or turning the lool;- ingf piece.

in testimony that I claim the foregoing,` have hereunto :eet my hand this kth day of March, 1922..

TAE/HS C. SCHEME.. 

